Headlight



Sept. 8, 1925' 1,553,245

T. 0. D. JANSEN HEADLIGHT Filed Nov. 25 1924 ATTORNEYS Patented Sept. 8, 1925.

UNITED STATES THEODORE OSMUND DANIEL JANSEN, OF BAMBALA-I-ITIYA, COLOMBO, OEYLON.

HEADLIGHT.

Application filed November 26, 1924.

T all whom it may concern:

Be it known that I, THEODORE OSMUND DANIEL JANsEN, asubject of the King of Great Britain, and a resident of Bambalapitiya, Colombo, Island of Ceylon, have invented a new andlmproved Headlight, of which the following is a full, clear, and exact description.

This invention. relates to headlights and more particularly to headlights for automobiles and similarvehicles, an object of the invention being to provide a headlight with which by manual manipulation of the position of the lamp with relation to the reflector the illumination or reflect-ion of light can be varied and the glare reduced to a minimum.

A further object is to provide improvements of this character in which th lamp is movable entirely or partially through an opening in the reflector of the headlight and may be positioned as desired with relation to the focal center of the reflector so as to give the desired results.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts which will be more fully hereinafter described and pointed out in the claims.

.Tn the accompanying drawings Figure 1 is a view in longitudinal section illustrating my improved headlight;

Figure 2 is a fragmentary view in section at right angles to Figure 1;

Figure 3 is a fragmentary View in transverse section on th line 33 of Figure 2'.

With reference to the drawings, 1 represents the headlight casing and 2 a reflector secured in the headlight, spaced from the wall thereof particularly at the rear of the headlight. Through the center and rear of the casing 1 a bolt 3 is projected and is preferably keyed to the casing as indicated at 4 and provided with a nut 5 against the rear of the casing. This nut is adjustable on the bolt to position the latter longitudinally as may be desired.

The forward end of the bolt 3 within the space 6 between the reflector 2 and casing 1 is made with a fork 7, preferably horizontally positioned, and on the bolt 3 back of the fork 7 a coil spring 8 is located, exerting pressur against the fork to maintain the bolt in proper position to prevent rattling a d to cu hion vibrations and movements.-

Serial No. 752,409.

Within the fork 7 a lamp socket 9 is mounted. This lamp socket is provided at opposite sides with trunnions 10 which have rotary mounting in the members of fork 7. One of these trunnions 10 is preferably provided with a coil spring 11, exerting pres sure against the fork so as to prevent a loose connection, to frictionally bind, and to cushion vibrations and shocks. The other trunnion 10 has a crank arm 12 thereon which is connected by a coil spring 13 with an operating link 15. This link 15 projects through a slot 16 in casing 1 and has any desired number of notches 17 in one edge to engage awall of the opening 16 and hold the socket at any desired position of ad justment.

I have shown the link 15 as having an eye 18 at its outer end to which may be connected any suitable means for operating or moving the same. An ordinary electric lamp or bulb 19 is removably located in the socket 9 and the wires 20 electrically connected thereto are projected through the bolt 3, which is of course hollow, and may be included in any suitable electric circuit.

The reflector 2 is made with an opening 21 of a size and of a. desired shape to allow the lamp 19 to move therethrough so that the lamp may be positioned either at the focal center of the reflector, as indicated by dot and dash lines in Figure 1, or it may be swung to a position between the refiector and the casing 1, or it may be located at any desired intermediate position.

In operation when it is desired to reduce the glare, the lamp 19 is swung from the focal center of the reflector either into the space 6 or at an intermediate position between its extremities of movement. In other words, if it is desired to reduce the glare to a positive minimum the lamp is moved to an extreme position in the space 6 between the reflector 2 and the casing 1. If the glare is to be reduced but partially the lamp may be located at some intermediate position so that the glare is entirely under the control of the operator and can be regulated at will.

The importance of this device is apparent.

Various slight changes and alterations might be made in the general form of the parts described without departing from my invention, and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of the appended claims I claim:

1. The combination with a casing, and a reflector in the casing spaced from the rear portion of the casing and having an opening therein, of a lamp socket having pivotal mounting in the casing in the rear of the reflector, a lamp carried by said casing and movable through the opening in the reflector either to a position in front of the refiector or to a position between the reflector and the casing, a link projecting through an opening in the casing and operativclv connected to the socket, and notches in the edge of said link adapted to engage the casing and hold the lamp in either 01' said positions.

2. The combination with a casing, and a reflector in the casing having an opening therein, of a bolt projected through the easing, a fork on the bolt, a spring on the bolt interposed between the fork and the casing, a socket pivotallv mounted in the fork, a lamp mounted in the socket and adapted to be moved through the opening in the reflector, and means for moving the socket and lamp and securing them either with he lamp in the reflector or in a position be tween the reflector and the casing.

3. The combination with a casing and a reflector in the casing having an opening therein, of a bolt projected through the easing, a fork on the bolt, a spring on the bolt interposed between the fork and the casing, a socket in the fork, trunnions on the socket mounted in the fork, a lamp mounted in the socket and movable through the opening in the reflector, socket moving means eon nected to one of the trunnio-ns, said last mentioned means comprising a crank arm on the trunnion, and a. link connected with the crank arm and having notches therein, and said casing having an opening through which the link projects and againstone wall of which the notches may be engaged to hold the lamp in any position of angular adjus ment.

THEODORE OSMUND DANIEL JANSEN. 

